Improved shank



N IPETERS. PHOTO-LITHOGRAPH ER, WASHINGTON. D C.,

uitd

tatt attut HORACE nfs-TWR'T,

for BMA'T'a'MlCt'IJGAN.

Laim Parent No. 87,722-, ma Mami 9, 1869.

The Schedule referred to -Iin these Lettere :Patent and making pat Ofthe Baine- To .all'whom it nia/y concer/n:

, Be it known tha I, HORACE P. STEWART, of Bath, in the county of Cihton, and State of Michigan, have invented an Improved Shank for Booteand Shoes; and I do hereby declare that the following is a full andexact description thereof, reference being had to the accompanyingdrawings, making part of this specification- Figure l being `a side oredge view of the shank, shown in the shoe.

Figure 2, a bottom View thereof.

Like'lettersI designate corresponding parts in both iigures.

The shank A is properly made of thin steel plate.

I make the instep-portion a convex on its lo'wer, or outer side, andcorrespondingly concave on its upper side, to receive the 4 usualfilling of leather.

By this form, a proper degree of stiffness and elas ticity is obtainedwith the smallest quantity of metal. The convexA form is intended to besuch as to conform to that portion of a sole Without a covering ofleather,

"although, if desired, the outer sole may be extended over it, asindicated by the red line, iig. l.

From the instep to the forward end b, the shank is attened, to conformto that portion of the sole where it is secured under the outer sole. Itis provided with a hole, j, for the insertion of a tack to hold it inplace until the sole is sewed or pegged on.

The rear end e of the shank is formed to t the portion of the solecovered by the heel g of the boot or shoe, and is provided with atriangular or approximate form of aperture or notch, d, for securing theshank to the sole under the heel.

This aperture is such as to relieve the strain on the shank, and obviateits liability to break, and to allow a freer elasticity.

Thus I obtain a very superior shank in strength, lightness, andelasticity, and withal, one which allows the boot or shoe to be finishedin better form, and with less expense. It is, in truth, superior inallfrespects to the usual form.

What I claim as my invention, and desire to by Letters Patent, is-

Ihe improved metallioshank, having the instep-portion a' shaped to suitthe finished form of the boot or shoe, when terminating at the heel-end,with the notch d, as and'for the `purpose herein specified.

The above specification signed by me, this 15th day of July, 1868.

. HORACE P. STEWART.

Witnesses:

W. S. HALL, ISAAC KEMER.:

seonre

